export function argsToCommandLine()

in src/windowsPtyAgent.ts [251:301]

• 50 lines of code
• 15 McCabe index (conditional complexity)

export function argsToCommandLine(file: string, args: ArgvOrCommandLine): string {
  if (isCommandLine(args)) {
    if (args.length === 0) {
      return file;
    }
    return `${argsToCommandLine(file, [])} ${args}`;
  }
  const argv = [file];
  Array.prototype.push.apply(argv, args);
  let result = '';
  for (let argIndex = 0; argIndex < argv.length; argIndex++) {
    if (argIndex > 0) {
      result += ' ';
    }
    const arg = argv[argIndex];
    // if it is empty or it contains whitespace and is not already quoted
    const hasLopsidedEnclosingQuote = xOr((arg[0] !== '"'), (arg[arg.length - 1] !== '"'));
    const hasNoEnclosingQuotes = ((arg[0] !== '"') && (arg[arg.length - 1] !== '"'));
    const quote =
      arg === '' ||
      (arg.indexOf(' ') !== -1 ||
      arg.indexOf('\t') !== -1) &&
      ((arg.length > 1) &&
      (hasLopsidedEnclosingQuote || hasNoEnclosingQuotes));
    if (quote) {
      result += '\"';
    }
    let bsCount = 0;
    for (let i = 0; i < arg.length; i++) {
      const p = arg[i];
      if (p === '\\') {
        bsCount++;
      } else if (p === '"') {
        result += repeatText('\\', bsCount * 2 + 1);
        result += '"';
        bsCount = 0;
      } else {
        result += repeatText('\\', bsCount);
        bsCount = 0;
        result += p;
      }
    }
    if (quote) {
      result += repeatText('\\', bsCount * 2);
      result += '\"';
    } else {
      result += repeatText('\\', bsCount);
    }
  }
  return result;
}